Three-dimensional high-resolution anorectal manometry: cut-off values for diagnosis of dyssynergic defecation in children.

Objective: Dyssynergic defecation (DD) may be one of the most important causes of constipation, but its diagnostic criteria have not been formally validated in children. This study aims to evaluate constipated children with 3DHRAM (three-dimensional high-resolution anorectal manometry) and determine a new pediatric cut-off for DD variables.

Patients And Methods: 205 patients diagnosed with functional constipation (FC) based on Rome III criteria were prospectively enrolled.